Lock.



F. E. BENNETT.

LOOK.

APPLIOATION FILED JULY 25,1910. I '1 ,O0O,889 Patented Aug. 15, 1911.

coLuMmA PLANOGRAPH 13.,WA5HINGTON. n. c

'onrrnn srarns PATENT onnion.

FRED E. BENNETT, 015 LOS ANGEL-ES, CALIFORNIA, ASSIGNOR TO PHOENIXCOMBINA- TION LOCK COMPANY, OF PHOENIX, ARIZONA TERRITORY, A CORPORATIONOF ARIZONA TERRITORY.

LOCK.

ooosee.

Specification of Letters Patent.

Patented Aug. 15, 1911.

T 0 all whom it may concern:

Be it known that I, FRED E. BENNETT, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Locks, of whichthe following is a specification.

This invention relates to improvements in locks of the permutation typefor the purpose of rendering them more certain and reliable in theiraction; and it relates particularly to a lock in which rotating disksare utilized to hold or release the locking bolt, such as describedin myapplication S. N. 539,036 filed January 20, 1910. In locks of thischaracter it has heretofore been difficult to obtain a constructionwhich would allow the individual disks. to be entirely independent ofone another at all times except when it is desired to drive one diskthrough the medium of another, at the same time obtaining a constructionwhich is simple in character so as to permit of inexpensive manufactureand assembly of parts.

The present invention consists mainly in the construction of the studshaft and the arrangement of the disks thereon. The stud shaft is madein two portions, one carried by the back and one by the front of thelock. Provision is made for slipping the disks on the parts of the studshaft and for securing them thereon in such a manner that they areentirely out of contact with each other excepting through the medium ofthe driving lugs. After the front and back of the lock have beenassembled as separate elements, the elements may then be assembled by asimple operation, as will be explained.

In the accompanying drawings: Figure 1 is an elevation of my improvedlock. Fig. 2 is a section taken on line 2-2 of Fig. 3. Fig. 3 is anenlarged section taken on line 83 of Fig. 2. Fig. 4c is a furtherenlarged section, showing in detail the construction and arrangement ofthe stud shaft and the disks mounted thereon. Fig. 5 is a detail showingthe stud shaft previous to the place ment of the disks thereon.

In the drawings 5 designates a case of suitable construction, being inthe form illustrated, with a back 6 and lateral walls 7. The face ismade with a flat faced projection 8 on top through which shackle 9extends. Shackle 9 is provided with a short shank 10 and a long shank11, short shank 10 extending into a shallow aperture 12 in portion 8 andlong shank 11 extending through portion 8 and lateral wall 7 into theinterior of the case. The lower end of shank 11 passes through two guidemembers 13 formed integrally with the case and between which a bolt 14is adapted to rec1procate. Bolt 14 is provided with a beveled face 15 onits end which engages with shank 11, the bevel being so arranged that anupward pull on the shank will force the bolt toward the left in Fig. 2'.The bolt normally abuts, or approaches, the peripheries of a series ofdisks 16, 17 and 18, disk 16 being slightly larger in diameter than theother two disks. This general construction and combination of shackleand locking de vices is disclosed in my former application abovementioned and forms no part of the present invention.

Formed integrally with back 6 is a stud 20- having two cylindricalportions of differentdiameters. On each of these cylindrical portions ismounted one of disks 17 and 18. The stud is originally formed as shownin Fig. 5, portions 21 and 22' being turned to different diameters so asto leave a shoulder 23 between the two portions. Immediately behind theend of the stud and behind shoulder 23 a circumferential slot 24: iscut, as shown in Figs. 4 and 5. lVhen disk 18 is placed upon portion 21,a hollow upset tool is used to force the ring of material at 25 aroundover the edge of the remainder of portion 21 in the form of a bead 26.Disk 17 is then similarly placed on portion 22 and a head 27 is formedto hold that isk in place. Each of the disks is provided with a hub 28which serves to space it from the adjacent disks and also to give it asufficient bearing upon the stud shaft. The space allowed for the hubsis such that, when beads 26 and 27 are turned over as shown, suflicientroom is allowed for the free movement of the disks. The provision ofcuts 24 allows the turning of beads 26 and 27 without upsetting theportions of the stud shaft on which the disks rotate, thus leaving themfree. Disk 16 is similarly mounted on a stud 30 with the exception thatit is tightly fitted onto the stud so thatitcannotbe moved thereon underordinary circumstances. It is possible to move the disk on the stud byapplying sufiicient force, this provision being made in order that thecombination of the lock may be changed if desired. Hub 31. of disk 16bears against front plate 32 of the look. This plate is secured to thecase by placement in a groove 46 and the formation of a bead 47 over thefront of its edge. Stud 30 is securely attached to or forms a part ofthumb nut 33 on the outside of the lock. Immediately under thumb nut 33is rigidly attached a spring plate 34, the plate being forced onto stud30 so that it will turn therewith. The parts just described areassembled before front plate 32 is Placed in the case. Plate 34 isresilient owing to its dished configuration. When the parts areassembled, plate 34 is compressed between thumb nut 33 and plate 32,edge 35 of plate 34 being thereby forced into close frictionalengagement with the front plate 32. When the front plate is placed inposition a pin 36 on the end of stud 30 enters a bore 37 in the end ofstud 20, holding the two studs in alinement to form the stud shaft onwhich the disks are mounted. The edge of bore 37 is rounded off so as toprevent any inward forcing of the edge and consequent seizing of pin 36when the bead 27 is formed or when the lock is subjected to any crushingpressure, tending to force the two studs together.

Plate 34 is provided with numbered division marks 40 on its edge whichare registered with a mark 41 on plate 32. Driving lugs 42 are formed onthe disk for the purpose of rotating one from the other. When thecorrect combination is turned up all three notches 43 will be arrangeddirectly opposite bolt 14. An upward pull on the shackle will then forcethe bolt into the notches and out of engagement with the shackle,allowing the shackle to bev withy drawn.

It will be understood that my invention consists particularly in theconstruction of the studs and the mounting of the disks thereon, thatthe remaining features of'the mechanism described may be varied at will,the claimed features being capable of combination with widely varyingbolt and shackle mechanisms. 7

Having described my invention, I claim:

1. In a lock of the character described, a disk carrying stud, having aperipheral groove near its end, and a diskmounted on the stud behind thegroove, the metal in the edge portions of the end of the stud outsidethe groove being flattened and eX- panded in diameter to form a collarpreventing the removal of the disk from the stud.

2. In a device of the character described, a disk carrying stud having aplurality of portions of unequal diameters and a shoulder at the end ofeach portion, there being an annular groove in each portion near theshoulder, and a disk mounted on each of the portions behind the grooveand abutting the shoulder of the adjacent portion, the metal between theshoulder and groove of each portion being flattened out and enlarged indiameter and turned over the stud body portion to form a bead preventingthe removal of the disk from the stud.

In witness that I claim the foregoing 1 have hereunto subscribed my namethis 20th day of July 1910.

FRED E. BENNETT.

Witnesses:

J AMES T. BARKELEW, ELwooD H. BARKELEW.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

